Edmund meredith



@einen gisten atwt @ffice EDMUND MEREDITH, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO HIMSELF AND J. S. SELLERS, OF SAME PLAGE.

Leners Patent No. 72,217, and December 17, 1867.

IMPROVEMENT IN DRY GAS-METERS.

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vTO ALL WIIOM I'I MAY CONCERN:

'-Be it known that I, EDMUND MEREDITH, of the city of Philadelphia, in the State'ot Pennsylvania, have invented a new and useful Improvement in the Dry Gas-Meter; and I do hereby declare that the following is a. full, clear, vand exact description of the construction and operation bf tbe same, reference being had to the accompanying drawings, making a part ef this specification, in which- Figure l is a sectional side eleva-tion of a dry gas-meter, having my improvement applied thereto, and

Figure *2 a plane view of thcfupper or open side of the rotary disk of the valve-s Like letters of reference indicating the saine parts when in both figures.

The object of my improvement is to prevent -the ilow of gas through the meter when the latter is reversed in regard to its connections with the supply and the discharge-pipes, as has frequently been done by the frauduhlent consumer for the purpose of avoiding the registration;` and my invention consists, substantially as hereinattcr described, in so constructing the connections between the rotating disk and its carrier that, when the proper or legitimatcdircction of the current of gas passing through the meterris reversed, the carrier will override the rotary disk so as to press it down upon its seat, and thus arrest the motion of both, and prevent the disk from being lifted up by thogas, so as to allow the latter to pass out ofthe meter without being registered.

Referring to the drawings, A is the valve-seat, B the' rotary disk of the valve, C the carrier of the disk, and D the legitimate outlet-pipe for the discharge of thopgas. The scat A and the rotary disk B have their adjoining or contact faces made and adjusted'together in the usual manner; but the periphery and the upper side of the disk B have two recesses, b' b', each recess being made for the reception and free motion therein of an arm, c', which extends down at opposite sides ofthe carrier C. These arms c have each an inclined plane, c, which extends upward from near the lowercnd of the arm to the under side of the @at diskv of the carrier, from which the arms project, while the opposite side ot' the arm is nearly vertical', and bears against the forward boundary of the recess la when the carrier is in motion-in its legitimate direction, 'and thus causes thc disk B to rotate on its seat A in transmiting the gas through the meter to the outlet-pipe D; but should the meter he reversed, so as to reverse therein the direction of the current of gas, or, in other words, to make the outlet-pipe D serve as the inlet, the irst movement of the bellows will cause the carrier C te rotate in a contrary direction, and bring each of its :inclined planes c into contact with the rear bound-ary b of its respective recess in the disk B, so that' it will slide up .thereon |(sec tig. 1) Vsufficiently to press the said disk closely down upon its scat A, and, consequently, Stop t-he flow of gas through the meter, and thus prevent the fraudu- 'lent consumption before specified.

Having thus fully described improvement in Ithe dry gas-meter, what I claim as my invention, and desire to secure by Letters Patent, is confined to the following:

I claim the application of the inclined planes e, either to the carrier C or to the rotary disk B, so as to operate substantially as and for the purpose described.

EDMUND MEREDITH.

Witnesses: y

BENJ. MonrsoN, JAMES WINsMonn, Jr. 

